Perhaps you should try some spelling variations:
dich hoc » sinh hoc, hinh hoc, tinh hoc
cuu cong » cua cong, thu cong, cac cong
cong hoa » dong hoa, dong hoc, hang hoa
hoa toan » hoa tan, hop toan, hoa than
khoa hoc » hoa hoc
phanh vi » nhanh vi, phan vi, hanh va
tu dich » te dich, chu dich, hut dich
hoc dai » hoc dan
dai moi » doi moi, dai hoi
moi van » mai van, moi va, doi van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu dich hoc tap, nghien cuu cong hoa toan khoa hoc dai moi van ((phanh vi) or (hanh vi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dich hoc tap, nghien cuu cong hoa toan khoa hoc dai moi van ((phanh vi) OR (hanh vi)).
• Adding a wildcard symbol may retrieve word variants: tu dich hoc tap, nghien cuu cong hoa toan khoa hoc dai moi van ((phanh vi) or (hanh vi))*.